Variables Math Example 4

Follow the full solution, then compare it with the other examples linked below.

Example 4

medium
Write an expression using a variable for: 'a number increased by 8.'

Solution

  1. 1
    Let xx represent the unknown number.
  2. 2
    Translating 'increased by 8' means adding 8: x+8x + 8.

Answer

x+8x + 8
Variables let us write general mathematical statements. The phrase 'a number' becomes a variable, and 'increased by' means addition.

About Variables

A symbol (usually a letter like xx) that represents an unknown or changing quantity in a mathematical expression.

Learn more about Variables →

More Variables Examples

Example 1 easy

If [formula], what value does [formula] represent?

Example 2 medium

Evaluate the expression [formula] when [formula] and [formula].

Example 3 easy

If [formula], what is the value of [formula]?

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